I tend to favour the puzzle, RPG, action-adventure and strategy genres. My particular favourites over the years have been Final Fantasy IX, Metal Gear Solid, Civilisation V and The Last of Us. I'm also a sucker a series: Darksiders, Assassin's Creed, Tomb Raider.
I am a bit of a lone gamer as I tend to steer clear of PvP, and only play multiplayer with close friends.